function validateEmail(addr,man,db) {
if (addr == '' && man) {
   if (db) alert('email address is mandatory');
   return false;
}
if (addr == '') return true;
var invalidChars = '\/\'\\ ";:?!()[]\{\}^|';
for (i=0; i<invalidChars.length; i++) {
   if (addr.indexOf(invalidChars.charAt(i),0) > -1) {
      if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
      return false;
   }
}
for (i=0; i<addr.length; i++) {
   if (addr.charCodeAt(i)>127) {
      if (db) alert(" Please enter a valid email address. i.e. john_smith@domain.com");
      return false;
   }
}

var atPos = addr.indexOf('@',0);
if (atPos == -1) {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
if (atPos == 0) {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
if (addr.indexOf('@', atPos + 1) > - 1) {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
if (addr.indexOf('.', atPos) == -1) {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
if (addr.indexOf('@.',0) != -1) {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
if (addr.indexOf('.@',0) != -1){
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
if (addr.indexOf('..',0) != -1) {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
var suffix = addr.substring(addr.lastIndexOf('.')+1);
if (suffix.length != 2 && suffix != 'com' && suffix != 'net' && suffix != 'org' && suffix != 'edu' && suffix != 'int' && suffix != 'mil' && suffix != 'gov' & suffix != 'arpa' && suffix != 'biz' && suffix != 'aero' && suffix != 'name' && suffix != 'coop' && suffix != 'info' && suffix != 'pro' && suffix != 'museum') {
   if (db) alert('Please enter a valid email address. i.e. john_smith@domain.com');
   return false;
}
return true;
}
function checkURL(value) {
//	 var tomatch= /(ftp|http|https?):\/\/[A-Za-z0-9\.-]{3,}\.[A-Za-z]{3}/
	 var tomatch= /(ftp:\/\/|www\.|http:\/\/|https:\/\/?)[A-Za-z0-9\.-]{3,}\.[A-Za-z]{3}/
	 if (tomatch.test(value))
	 {
		 return true;
	 }
	 else
	 {
		 window.alert("Please enter a valid website address. i.e. www.website.com");
		 return false; 
	}
}